﻿// -----------------------------------------------------------------------------------------
// QSVEnc/NVEnc by rigaya
// -----------------------------------------------------------------------------------------
// The MIT License
//
// Copyright (c) 2011-2016 rigaya
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
// ------------------------------------------------------------------------------------------

#pragma once
#ifndef __API_HOOK_H__
#define __API_HOOK_H__

#include <cstdio>
#include <cstring>
#include <tchar.h>
#include <string>
#include <vector>
#include <algorithm>
#include <windows.h>
#pragma warning(push)
#pragma warning(disable:4091)
#include <imagehlp.h>
#pragma comment(lib,"imagehlp.lib")
#pragma warning(pop)

struct hookData {
    std::basic_string<TCHAR> sTargetModuleName;
    std::string sTargetFunctionName;
    void *pNewFunc;
    void *pOrigFunc;
    void **pOrigFuncSetAdr;
};

class apihook {
public:
    apihook();
    ~apihook();
    int hook(const TCHAR *pTargetModuleName, const char *pTargetFunctionName, void *pNewFunc, void **pOrigFuncSetAdr);
    static void print_all_func();
    void fin();
    void fin(const TCHAR *pTargetModuleName, const char *pTargetFunctionName);
    void fin(void *pOrigFuc);
    void *get_orig(const TCHAR *pTargetModuleName, const char *pTargetFunctionName);
private:
    static void *hook_function(const TCHAR *pTargetModuleName, const char *pTargetFunctionName, void *pNewFunc);
    std::vector<hookData> hookList;
};

#endif //__API_HOOK_H__
